package webday04;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class LogoutServlet extends HttpServlet {

	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		
		//退出登陆，让session失效，清除用户信息
		HttpSession session=req.getSession();
		session.invalidate();
		
		//默认失效时间
		//session.setMaxInactiveInterval(30*60);
		
		//重定向实现跳转
		resp.sendRedirect("login.jsp");
	}
}
